Improvement in nut-fastenimgs



A. Wl. B0 USE.

Nut-Fastenings.

Patented Dec.31, 1872.

WITNESSES: /7/

"ALBION M. ROUSE, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF HIS RIGHTTO PETER E. BLAND AND ANDREW J. BAKER, OF SAME PLACE.

w IMPROVEMENT IN NUTFASTENINGS.

`Specification forming part of Letters Patent Noi SLLLIQ, dated December31, 1372.

To all whom it may concern:

Be it' known that I, ALBION M. RoUsE, of city andcounty of St. Louis andState of Missouri, have -invented a certain Improvement in Locking-Nuts,of which the following is a specification: A

This improvement consists in a nut which is made of a pla-te of metaldoubled upon itself, and which is made to lock by causing the two partsto take a position in relation to each other different to that in whichthe thread was formed in the nut.

In the figures, which are axial sections at right angles to thefoldedside, the form ofthe blanks is shown in dotted lines, and of thefinished nut in whole lines.

The drawing illustrates different forms of nuts.

Figures 1 and 2 show nuts more especially intended for use singly. Figs.3 and 4 show nuts intended more particularly for use to lock other nutsin position, and are made of thinner plates than in Figs. 1 and 2.

The preferred manner of construct-ing these nuts is, first, to roll outthe iron in bars, whose cross-section is shown in the drawing by thedotted lines B', and the lower section A in full lines, the uppersection or plate B showing the dotted part after being folded over in-`t0 position. After rolling, the bar is punched Yupon both sides, asshown at a and b, and cut into blanks, each of which forms one nut. Tofold the part B over that A, the blank is heated, and the part A isplaced upon a fixed pin, whose upper end is made conical so as to enterthe hole b and guide the part B into eX- act position as it is foldedover, as shown in full lines in the figures. The space between theplates A B is preferably made an eighth of an inch wide, more or less,for two reasons: First, in tapping the nut a small burr is formed, andwhen the saidwrspace is made sufficiently wide the burrs do notinterfere with the described locking action of the nuts, Figs. 1 and `2;second, the space gives an opportunity to set the plates together, ifthey have been at any time strained too far apart soas to get apermanent set insuch position. In rolling the bars, small longitudinalgrooves d are formed in the same to receive keys or pins,

for purpose hereafter explained. Before tap ping or forming thescrew-thread in the nuts, shown in Figs. l and 2, a small pin, e, isdriven into the key seat or hole formed by the two grooves d so as tostrain the plates A B apart, and the pin e is left in the nut until itis screwed on the bolt.

After screwing the nut into position the l/:e5r e is driven out of thenut, and the elasticity of the connecting part O draws the plates A Btoward each other, and locks the nut firmly in position. Then tappingthe nuts shown in Figs. 3 and 4 the plates A B may be in con tact, andafter they are screwed on the bolts a tapering pin, e, is driven intothe pin-holes d to spread the plates A B apart and lock the nut. In Fig.4 the key e causes the plates A B to have lateral movement on each otherto lock them on the bolt.

The nuts may be locked in other ways than the ways describedforinstance, the plates in Figs. 3 and 4 may be spread apart with acold-chisel, or a sled ge may be held to the side opposite to C, and thelatter may receive the bloT of a hammer, which would cause the plates tospread apart until theybecaine locked upon the bolt or a pin might bedriven inside the bend O to spread the plates apart. I prefer the formsshown in Figs. 1 and 2 for situations Where a single nut is used; butthe thin nuts shown in Figs. 3 and 4 will be sufficient pin or key c.

ALBION M ROUSE.

Witnesses:

SAML. KNIGHT, Bonner BURNS.

